Fire-door.



No. 766,390. PATBNTED AUG. 2, 1904. F. L. SAINO.

FIRE DOOR.

APPLICATION FILED FEB. 18, 1904.

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F. L. SAINO.

FIRE DOOR.

APPLICATION FILED FEB. 18, 1904.

2 SHBETSSKEET 2.

NO MODEL.

r m n e V n I ZZc z'Z. 6626/20 Witnesses Attorney NITED STATES PatentedAugust 2, 1904.

PATENT OFFICE.

FIRE-DOOR.

SPECIFICATION forming part of Letters Patent No. 766,390, dated August2, 1904. Application filed February 18, 1904. Serial No. 194,254. Nomodelfi To a, '!I/1,07)l/ it may concern.-

Be it known that I, FELIX LAWERN'ICE SATNO, a citizen of the UnitedStates, residing at Memphis, in the county of Shelby and State ofTennessee, have invented certain new and useful I mprovemcnts inFire-Doors; and I do declare the following to be a full, clear. andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

Hy invention relates to improvements in tire-doors of that classdesigned to be automatically self-closing at a predeterminedtemperature.

The object of my invention is to provide a simple, durable,comparatively inexpensive, and highly-efficient fire-door which willclose automatically when a predetermined degree of temperature isreached.

\Vith this and other objects in view the in vention consists of certainnovel features of construction, combination, and arrangement of parts,as will be more fully described, and particularly pointed out in theappended claims.

In the accompanying drawings, Figure 1 is a side elevation of a portionof a wall having a door-opening formed therein and a tire-door for saidopening constructed and controlled in accordance with my invention. Fig.2 is a vertical transverse sectional view through Fig. 1, taken on theplane indicated by the line .r .r. Fig. 3 is a View similar to Fig. 2with the parts in their released positions. Fig. i is a horizontalsectional View taken on the line f/ of Fig. 1. Fig. 5 is a detail viewof one of the door-releasing devices. Fig. 6 is a detail view of thedrop-weight.

In the embodiment of my invention illustrated in the drawings, 1 denotesa fireproof party-wall, of brick, stone, or the like,formcd with adoor-opening 2, which is adapted to be closed upon opposite sides of thewall by sliding doors 3 and 4, of metal or other fireproof material.Said doors are suspended, by means of hangers 5, from inclined tracks(3, so that they will slide transversely and close by gravity. Saidtracks 6 are secured upon opposite sides or faces of the wall 1 abovethe door-opening 2, as shown, and the hangers 5 are provided withrollers 7, which run upon said tracks to permit the doors to closeeasily.

The doors 3 and 4 are held in an open po sition and are releasedsimultaneously in the followingmanner: Projectingoutwardly from thefront edge of each of the doors is a bracket 8, upon which is pivoted at9 a weighted latch 10, adapted to swing in a vertical plane at rightangles to the door or across the front edge or end of the door and tolie against the jamb 11 of the door-opening 2, as clearly shown in Figs.2 and I ot' the drawings. Secured, by means of bolts, screws, nails, orthe like, to the said jamb 11 adjacent to the doors are brackets 13 and14, formed on their outer sides with projections or ledges 15, uponwhich the latches are adapted to rest. Pivoted upon a pin 16 in a slot17 in each of the brackets 13 and 1% is a holding and releasing device18, which is in the form of a lever, as shown. One arm, 19, of saidlever is formed with a trigger or projection 20, which is adapted toswing in front of the latch 10 to hold the same upon the projectingledge of the bracket, and hence hold the door back in its openedposition. Said trigger or portion 20 of the lever18 is held normally inengagement with the latch 10 by a coilspring 22, which is confinedbetween a projection 23 upon the bracket and a similar projection 2%upon the other arm, 25, of the lever 18. The upper end of the arm 19 ofsaid lever is formed with a stop projection 26, which is adapted toengage the top wallof the slot 17 of the bracket and limit the movementof the lever under the action of said spring 22. In order tosimultaneously release the doors, the arms 19 of said lovers are formedwith rightangularlyextending portions or arms 2'7, which project towardeach other and into opposite ends of a slot 28, formed in a dropweight29, which is suspended adjacent to the jamb 11 between the two doors 3and 1. IV hen the levers 18 are in their normal positions, their arms orportions 27 are disposed in an approximately horizontal position andproject into the lower end of the slot 28 of the weight 29, which issuspended by a cord or other flexible connection 30, secured at one ofits ends to the top of said weight, passing upwardly over a pulley 31,secured in the top of the door-opening, and extending across the top ofsaid opening, with its opposite end secured at 32 to the jamb of thedoor-opening. Interposed between the ends of said cord 30, preferablyover the center of the door-opening, is a fuse-link 33, adapted to meltat a predetermined degree of temperature to break the cord or connection30, and thereby release the weight 29, which in falling will swing thelevers 18 to the position shown in Fig. 3. When the levers are moved tothis position, the trigger projections 20 will be moved out of the wayof the latches 10, so that the doors may roll down by gravity to theirclosed position. The latches being pushed ofi of the projecting ledgesby the sliding movement of the doors will drop down, as shown, to clearthe opposite jamb of the door-opening. The slot 28 inthe weight 29 islong, so that the Weight in dropping will eXert a strong striking blowon the arms 27 to insure the release of the levers 18, and to insure theclosing of the doors the tracks 6 may be inclined to any suitableextent.

The operation and advantages of my invention will be readily understoodfrom the foregoing detailed description, taken in connection with theaccompanying drawings. It will be seen that when the link 33 is fused byheat the weight 29 will drop and release the doors, which willsimultaneously and automatically close by gravity. It will also benoticed that the device is simple and comparatively inexpensive and thatit will be positive and eflicient in operation.

While I have shown and described my invention as applied to release twodoors simultaneously, it will be understood that it may be used torelease but one.

Various changes in the form, proportion, and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages of this invention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The combination with a wall having an opening and a self-closing doorfor said opening, of a swinging latch upon said door, a bracket securedto the jamb of said door-opening and having a projecting ledge adaptedto be engaged by said latch, a holding and releasing lever pivotall ymounted in'said bracket and adapted to hold said latch upon saidprojecting ledge, and a weight suspended above said lever and adapted todrop at a predetermined temperature to operate said lever and releasesaid latch, substantially as described.

2. The combination with a wall having an opening and a slidable,gravity-closing door for said opening, of a swinging latch carried bysaid door, a bracket secured to the jamlo of said opening and. having aprojecting ledge adapted to support said latch, a spring-actuated leverpivotally mounted in said bracket and adapted to hold said latch uponsaid projecting ledge, a suspended weight adapted to actuate said leverwhen dropped, a suspending connection for said weight, and a fuse-linkin said suspending connection adapted to release said weight when fused,substantially as described.

3. The combination of a wall having a dooropening, slidably mounted,gravity-closing doors upon each side of said wall, latches upon saiddoors, brackets secured to the jamb of said door opening, levers pivotedin said brackets and adapted to engage said latches, a slotted weighthaving portions of said levers projecting into its slot, a suspendingconnection for said weight, and a fusible link in said suspendingconnection adapted to be fused at a predetermined degree of temperature,substantially as described.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

FELIX LAWERNIGE SAINO. Witnesses:

WM. CREAGAN, JAs. \V. RICI-IENS.

